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Merge tag 'for-linus-v3.10-rc3' of git://oss.sgi.com/xfs/xfs
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / usb / rtl8150.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * version 2 as published by the Free Software Foundation.
7 */
8
1da177e4
LT		 9#include <linux/init.h>
10#include <linux/signal.h>
11#include <linux/slab.h>
12#include <linux/module.h>
13#include <linux/netdevice.h>
14#include <linux/etherdevice.h>
15#include <linux/mii.h>
16#include <linux/ethtool.h>
17#include <linux/usb.h>
18#include <asm/uaccess.h>
19
20/* Version Information */
21#define DRIVER_VERSION "v0.6.2 (2004/08/27)"
22#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
23#define DRIVER_DESC "rtl8150 based usb-ethernet driver"
24
25#define IDR 0x0120
26#define MAR 0x0126
27#define CR 0x012e
28#define TCR 0x012f
29#define RCR 0x0130
30#define TSR 0x0132
31#define RSR 0x0133
32#define CON0 0x0135
33#define CON1 0x0136
34#define MSR 0x0137
35#define PHYADD 0x0138
36#define PHYDAT 0x0139
37#define PHYCNT 0x013b
38#define GPPC 0x013d
39#define BMCR 0x0140
40#define BMSR 0x0142
41#define ANAR 0x0144
42#define ANLP 0x0146
43#define AER 0x0148
44#define CSCR 0x014C /* This one has the link status */
45#define CSCR_LINK_STATUS (1 << 3)
46
47#define IDR_EEPROM 0x1202
48
49#define PHY_READ 0
50#define PHY_WRITE 0x20
51#define PHY_GO 0x40
52
53#define MII_TIMEOUT 10
54#define INTBUFSIZE 8
55
56#define RTL8150_REQT_READ 0xc0
57#define RTL8150_REQT_WRITE 0x40
58#define RTL8150_REQ_GET_REGS 0x05
59#define RTL8150_REQ_SET_REGS 0x05
60
61
1da177e4
LT		 62/* Transmit status register errors */
63#define TSR_ECOL (1<<5)
64#define TSR_LCOL (1<<4)
65#define TSR_LOSS_CRS (1<<3)
66#define TSR_JBR (1<<2)
67#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
68/* Receive status register errors */
69#define RSR_CRC (1<<2)
70#define RSR_FAE (1<<1)
71#define RSR_ERRORS (RSR_CRC | RSR_FAE)
72
73/* Media status register definitions */
74#define MSR_DUPLEX (1<<4)
75#define MSR_SPEED (1<<3)
76#define MSR_LINK (1<<2)
77
78/* Interrupt pipe data */
79#define INT_TSR 0x00
80#define INT_RSR 0x01
81#define INT_MSR 0x02
82#define INT_WAKSR 0x03
83#define INT_TXOK_CNT 0x04
84#define INT_RXLOST_CNT 0x05
85#define INT_CRERR_CNT 0x06
86#define INT_COL_CNT 0x07
87
88
89#define RTL8150_MTU 1540
90#define RTL8150_TX_TIMEOUT (HZ)
91#define RX_SKB_POOL_SIZE 4
92
93/* rtl8150 flags */
94#define RTL8150_HW_CRC 0
95#define RX_REG_SET 1
96#define RTL8150_UNPLUG 2
97#define RX_URB_FAIL 3
98
99/* Define these values to match your device */
5859271e 100#define VENDOR_ID_REALTEK 0x0bda
1da177e4 101#define VENDOR_ID_MELCO 0x0411
5859271e 102#define VENDOR_ID_MICRONET 0x3980
1da177e4 103#define VENDOR_ID_LONGSHINE 0x07b8
5859271e 104#define VENDOR_ID_OQO 0x1557
b6c2799d 105#define VENDOR_ID_ZYXEL 0x0586
1da177e4
LT		 106
107#define PRODUCT_ID_RTL8150 0x8150
108#define PRODUCT_ID_LUAKTX 0x0012
109#define PRODUCT_ID_LCS8138TX 0x401a
110#define PRODUCT_ID_SP128AR 0x0003
b6c2799d 111#define PRODUCT_ID_PRESTIGE 0x401a
1da177e4
LT		 112
113#undef EEPROM_WRITE
114
115/* table of devices that work with this driver */
116static struct usb_device_id rtl8150_table[] = {
117 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
118 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
119 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},
120 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)},
5859271e 121 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)},
b6c2799d 122 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},
1da177e4
LT		 123 {}
124};
125
126MODULE_DEVICE_TABLE(usb, rtl8150_table);
127
128struct rtl8150 {
129 unsigned long flags;
130 struct usb_device *udev;
131 struct tasklet_struct tl;
1da177e4 132 struct net_device *netdev;
4d12997a 133 struct urb *rx_urb, *tx_urb, *intr_urb;
1da177e4
LT		 134 struct sk_buff *tx_skb, *rx_skb;
135 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
136 spinlock_t rx_pool_lock;
137 struct usb_ctrlrequest dr;
138 int intr_interval;
1da177e4
LT		 139 u8 *intr_buff;
140 u8 phy;
141};
142
143typedef struct rtl8150 rtl8150_t;
144
4d12997a
PM		 145struct async_req {
146 struct usb_ctrlrequest dr;
147 u16 rx_creg;
148};
149
1da177e4
LT		 150static const char driver_name [] = "rtl8150";
151
1da177e4
LT		 152/*
153**
154** device related part of the code
155**
156*/
157static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
158{
159 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
160 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
161 indx, 0, data, size, 500);
162}
163
164static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
165{
166 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
167 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
168 indx, 0, data, size, 500);
169}
170
4d12997a 171static void async_set_reg_cb(struct urb *urb)
1da177e4 172{
4d12997a 173 struct async_req *req = (struct async_req *)urb->context;
c94cb314 174 int status = urb->status;
1da177e4 175
4d12997a
PM		 176 if (status < 0)
177 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
178 kfree(req);
179 usb_free_urb(urb);
1da177e4
LT		 180}
181
4d12997a 182static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg)
1da177e4 183{
4d12997a
PM		 184 int res = -ENOMEM;
185 struct urb *async_urb;
186 struct async_req *req;
187
188 req = kmalloc(sizeof(struct async_req), GFP_ATOMIC);
189 if (req == NULL)
190 return res;
191 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
192 if (async_urb == NULL) {
193 kfree(req);
194 return res;
195 }
196 req->rx_creg = cpu_to_le16(reg);
197 req->dr.bRequestType = RTL8150_REQT_WRITE;
198 req->dr.bRequest = RTL8150_REQ_SET_REGS;
199 req->dr.wIndex = 0;
200 req->dr.wValue = cpu_to_le16(indx);
201 req->dr.wLength = cpu_to_le16(size);
202 usb_fill_control_urb(async_urb, dev->udev,
203 usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr,
204 &req->rx_creg, size, async_set_reg_cb, req);
205 res = usb_submit_urb(async_urb, GFP_ATOMIC);
206 if (res) {
207 if (res == -ENODEV)
23219c13 208 netif_device_detach(dev->netdev);
4d12997a
PM		 209 dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res);
210 }
211 return res;
1da177e4
LT		 212}
213
214static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
215{
216 int i;
217 u8 data[3], tmp;
218
219 data[0] = phy;
220 data[1] = data[2] = 0;
221 tmp = indx | PHY_READ | PHY_GO;
222 i = 0;
223
224 set_registers(dev, PHYADD, sizeof(data), data);
225 set_registers(dev, PHYCNT, 1, &tmp);
226 do {
227 get_registers(dev, PHYCNT, 1, data);
228 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
229
c064efca 230 if (i <= MII_TIMEOUT) {
1da177e4
LT		 231 get_registers(dev, PHYDAT, 2, data);
232 *reg = data[0] | (data[1] << 8);
233 return 0;
234 } else
235 return 1;
236}
237
238static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
239{
240 int i;
241 u8 data[3], tmp;
242
243 data[0] = phy;
886ae1fa
AV		 244 data[1] = reg & 0xff;
245 data[2] = (reg >> 8) & 0xff;
1da177e4
LT		 246 tmp = indx | PHY_WRITE | PHY_GO;
247 i = 0;
248
249 set_registers(dev, PHYADD, sizeof(data), data);
250 set_registers(dev, PHYCNT, 1, &tmp);
251 do {
252 get_registers(dev, PHYCNT, 1, data);
253 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
254
c064efca 255 if (i <= MII_TIMEOUT)
1da177e4
LT		 256 return 0;
257 else
258 return 1;
259}
260
261static inline void set_ethernet_addr(rtl8150_t * dev)
262{
263 u8 node_id[6];
264
265 get_registers(dev, IDR, sizeof(node_id), node_id);
266 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
267}
268
269static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
270{
271 struct sockaddr *addr = p;
272 rtl8150_t *dev = netdev_priv(netdev);
1da177e4
LT		 273
274 if (netif_running(netdev))
275 return -EBUSY;
276
277 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
49ae25b0 278 netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr);
1da177e4 279 /* Set the IDR registers. */
6057912d 280 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr);
1da177e4
LT		 281#ifdef EEPROM_WRITE
282 {
d649a284 283 int i;
1da177e4
LT		 284 u8 cr;
285 /* Get the CR contents. */
286 get_registers(dev, CR, 1, &cr);
287 /* Set the WEPROM bit (eeprom write enable). */
288 cr |= 0x20;
289 set_registers(dev, CR, 1, &cr);
290 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
291 so we need to split them up. */
292 for (i = 0; i * 2 < netdev->addr_len; i++) {
141b9e66 293 set_registers(dev, IDR_EEPROM + (i * 2), 2,
1da177e4
LT		 294 netdev->dev_addr + (i * 2));
295 }
296 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
297 cr &= 0xdf;
298 set_registers(dev, CR, 1, &cr);
299 }
300#endif
301 return 0;
302}
303
304static int rtl8150_reset(rtl8150_t * dev)
305{
306 u8 data = 0x10;
307 int i = HZ;
308
309 set_registers(dev, CR, 1, &data);
310 do {
311 get_registers(dev, CR, 1, &data);
312 } while ((data & 0x10) && --i);
313
314 return (i > 0) ? 1 : 0;
315}
316
317static int alloc_all_urbs(rtl8150_t * dev)
318{
319 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
320 if (!dev->rx_urb)
321 return 0;
322 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
323 if (!dev->tx_urb) {
324 usb_free_urb(dev->rx_urb);
325 return 0;
326 }
327 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
328 if (!dev->intr_urb) {
329 usb_free_urb(dev->rx_urb);
330 usb_free_urb(dev->tx_urb);
331 return 0;
332 }
1da177e4
LT		 333
334 return 1;
335}
336
337static void free_all_urbs(rtl8150_t * dev)
338{
339 usb_free_urb(dev->rx_urb);
340 usb_free_urb(dev->tx_urb);
341 usb_free_urb(dev->intr_urb);
1da177e4
LT		 342}
343
344static void unlink_all_urbs(rtl8150_t * dev)
345{
346 usb_kill_urb(dev->rx_urb);
347 usb_kill_urb(dev->tx_urb);
348 usb_kill_urb(dev->intr_urb);
1da177e4
LT		 349}
350
351static inline struct sk_buff *pull_skb(rtl8150_t *dev)
352{
353 struct sk_buff *skb;
354 int i;
355
356 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
357 if (dev->rx_skb_pool[i]) {
358 skb = dev->rx_skb_pool[i];
359 dev->rx_skb_pool[i] = NULL;
360 return skb;
361 }
362 }
363 return NULL;
364}
365
7d12e780 366static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 367{
368 rtl8150_t *dev;
369 unsigned pkt_len, res;
370 struct sk_buff *skb;
371 struct net_device *netdev;
372 u16 rx_stat;
c94cb314
ON		 373 int status = urb->status;
374 int result;
1da177e4
LT		 375
376 dev = urb->context;
377 if (!dev)
378 return;
379 if (test_bit(RTL8150_UNPLUG, &dev->flags))
380 return;
381 netdev = dev->netdev;
382 if (!netif_device_present(netdev))
383 return;
384
c94cb314 385 switch (status) {
1da177e4
LT		 386 case 0:
387 break;
388 case -ENOENT:
389 return; /* the urb is in unlink state */
38e2bfc9 390 case -ETIME:
342a437e
AGR		 391 if (printk_ratelimit())
392 dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
1da177e4
LT		 393 goto goon;
394 default:
342a437e
AGR		 395 if (printk_ratelimit())
396 dev_warn(&urb->dev->dev, "Rx status %d\n", status);
1da177e4
LT		 397 goto goon;
398 }
399
400 if (!dev->rx_skb)
401 goto resched;
402 /* protect against short packets (tell me why we got some?!?) */
403 if (urb->actual_length < 4)
404 goto goon;
405
406 res = urb->actual_length;
407 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
408 pkt_len = res - 4;
409
410 skb_put(dev->rx_skb, pkt_len);
411 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
412 netif_rx(dev->rx_skb);
b7e41e23
SH		 413 netdev->stats.rx_packets++;
414 netdev->stats.rx_bytes += pkt_len;
1da177e4
LT		 415
416 spin_lock(&dev->rx_pool_lock);
417 skb = pull_skb(dev);
418 spin_unlock(&dev->rx_pool_lock);
419 if (!skb)
420 goto resched;
421
422 dev->rx_skb = skb;
423goon:
424 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
425 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
c94cb314
ON		 426 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
427 if (result == -ENODEV)
23219c13 428 netif_device_detach(dev->netdev);
c94cb314 429 else if (result) {
1da177e4
LT		 430 set_bit(RX_URB_FAIL, &dev->flags);
431 goto resched;
432 } else {
433 clear_bit(RX_URB_FAIL, &dev->flags);
434 }
435
436 return;
437resched:
438 tasklet_schedule(&dev->tl);
439}
440
7d12e780 441static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 442{
443 rtl8150_t *dev;
c94cb314 444 int status = urb->status;
1da177e4
LT		 445
446 dev = urb->context;
447 if (!dev)
448 return;
449 dev_kfree_skb_irq(dev->tx_skb);
450 if (!netif_device_present(dev->netdev))
451 return;
c94cb314 452 if (status)
880c9c66 453 dev_info(&urb->dev->dev, "%s: Tx status %d\n",
c94cb314 454 dev->netdev->name, status);
1da177e4
LT		 455 dev->netdev->trans_start = jiffies;
456 netif_wake_queue(dev->netdev);
457}
458
7d12e780 459static void intr_callback(struct urb *urb)
1da177e4
LT		 460{
461 rtl8150_t *dev;
462 __u8 *d;
c94cb314
ON		 463 int status = urb->status;
464 int res;
1da177e4
LT		 465
466 dev = urb->context;
467 if (!dev)
468 return;
c94cb314 469 switch (status) {
1da177e4
LT		 470 case 0: /* success */
471 break;
472 case -ECONNRESET: /* unlink */
473 case -ENOENT:
474 case -ESHUTDOWN:
475 return;
476 /* -EPIPE: should clear the halt */
477 default:
880c9c66 478 dev_info(&urb->dev->dev, "%s: intr status %d\n",
c94cb314 479 dev->netdev->name, status);
1da177e4
LT		 480 goto resubmit;
481 }
482
483 d = urb->transfer_buffer;
484 if (d[0] & TSR_ERRORS) {
b7e41e23 485 dev->netdev->stats.tx_errors++;
1da177e4 486 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
b7e41e23 487 dev->netdev->stats.tx_aborted_errors++;
1da177e4 488 if (d[INT_TSR] & TSR_LCOL)
b7e41e23 489 dev->netdev->stats.tx_window_errors++;
1da177e4 490 if (d[INT_TSR] & TSR_LOSS_CRS)
b7e41e23 491 dev->netdev->stats.tx_carrier_errors++;
1da177e4
LT		 492 }
493 /* Report link status changes to the network stack */
494 if ((d[INT_MSR] & MSR_LINK) == 0) {
495 if (netif_carrier_ok(dev->netdev)) {
496 netif_carrier_off(dev->netdev);
49ae25b0 497 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__);
1da177e4
LT		 498 }
499 } else {
500 if (!netif_carrier_ok(dev->netdev)) {
501 netif_carrier_on(dev->netdev);
49ae25b0 502 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__);
1da177e4
LT		 503 }
504 }
505
506resubmit:
c94cb314
ON		 507 res = usb_submit_urb (urb, GFP_ATOMIC);
508 if (res == -ENODEV)
23219c13 509 netif_device_detach(dev->netdev);
c94cb314 510 else if (res)
21f52432
GKH		 511 dev_err(&dev->udev->dev,
512 "can't resubmit intr, %s-%s/input0, status %d\n",
513 dev->udev->bus->bus_name, dev->udev->devpath, res);
1da177e4
LT		 514}
515
23219c13
PC		 516static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message)
517{
518 rtl8150_t *dev = usb_get_intfdata(intf);
519
520 netif_device_detach(dev->netdev);
521
522 if (netif_running(dev->netdev)) {
523 usb_kill_urb(dev->rx_urb);
524 usb_kill_urb(dev->intr_urb);
525 }
526 return 0;
527}
528
529static int rtl8150_resume(struct usb_interface *intf)
530{
531 rtl8150_t *dev = usb_get_intfdata(intf);
532
533 netif_device_attach(dev->netdev);
534 if (netif_running(dev->netdev)) {
535 dev->rx_urb->status = 0;
536 dev->rx_urb->actual_length = 0;
7d12e780 537 read_bulk_callback(dev->rx_urb);
23219c13
PC		 538
539 dev->intr_urb->status = 0;
540 dev->intr_urb->actual_length = 0;
7d12e780 541 intr_callback(dev->intr_urb);
23219c13
PC		 542 }
543 return 0;
544}
1da177e4
LT		 545
546/*
547**
548** network related part of the code
549**
550*/
551
552static void fill_skb_pool(rtl8150_t *dev)
553{
554 struct sk_buff *skb;
555 int i;
556
557 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
558 if (dev->rx_skb_pool[i])
559 continue;
560 skb = dev_alloc_skb(RTL8150_MTU + 2);
561 if (!skb) {
562 return;
563 }
1da177e4
LT		 564 skb_reserve(skb, 2);
565 dev->rx_skb_pool[i] = skb;
566 }
567}
568
569static void free_skb_pool(rtl8150_t *dev)
570{
571 int i;
572
573 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
574 if (dev->rx_skb_pool[i])
575 dev_kfree_skb(dev->rx_skb_pool[i]);
576}
577
141b9e66 578static void rx_fixup(unsigned long data)
579{
580 struct rtl8150 *dev = (struct rtl8150 *)data;
581 struct sk_buff *skb;
582 int status;
583
584 spin_lock_irq(&dev->rx_pool_lock);
585 fill_skb_pool(dev);
586 spin_unlock_irq(&dev->rx_pool_lock);
587 if (test_bit(RX_URB_FAIL, &dev->flags))
588 if (dev->rx_skb)
589 goto try_again;
590 spin_lock_irq(&dev->rx_pool_lock);
591 skb = pull_skb(dev);
592 spin_unlock_irq(&dev->rx_pool_lock);
593 if (skb == NULL)
594 goto tlsched;
595 dev->rx_skb = skb;
596 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
597 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
598try_again:
599 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
600 if (status == -ENODEV) {
601 netif_device_detach(dev->netdev);
602 } else if (status) {
603 set_bit(RX_URB_FAIL, &dev->flags);
604 goto tlsched;
605 } else {
606 clear_bit(RX_URB_FAIL, &dev->flags);
607 }
608
609 return;
610tlsched:
611 tasklet_schedule(&dev->tl);
612}
613
1da177e4
LT		 614static int enable_net_traffic(rtl8150_t * dev)
615{
616 u8 cr, tcr, rcr, msr;
617
618 if (!rtl8150_reset(dev)) {
4dc89948 619 dev_warn(&dev->udev->dev, "device reset failed\n");
1da177e4
LT		 620 }
621 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
622 rcr = 0x9e;
1da177e4
LT		 623 tcr = 0xd8;
624 cr = 0x0c;
625 if (!(rcr & 0x80))
626 set_bit(RTL8150_HW_CRC, &dev->flags);
627 set_registers(dev, RCR, 1, &rcr);
628 set_registers(dev, TCR, 1, &tcr);
629 set_registers(dev, CR, 1, &cr);
630 get_registers(dev, MSR, 1, &msr);
631
632 return 0;
633}
634
635static void disable_net_traffic(rtl8150_t * dev)
636{
637 u8 cr;
638
639 get_registers(dev, CR, 1, &cr);
640 cr &= 0xf3;
641 set_registers(dev, CR, 1, &cr);
642}
643
1da177e4
LT		 644static void rtl8150_tx_timeout(struct net_device *netdev)
645{
646 rtl8150_t *dev = netdev_priv(netdev);
4dc89948 647 dev_warn(&netdev->dev, "Tx timeout.\n");
1da177e4 648 usb_unlink_urb(dev->tx_urb);
b7e41e23 649 netdev->stats.tx_errors++;
1da177e4
LT		 650}
651
652static void rtl8150_set_multicast(struct net_device *netdev)
653{
654 rtl8150_t *dev = netdev_priv(netdev);
4d12997a
PM		 655 u16 rx_creg = 0x9e;
656
1da177e4
LT		 657 netif_stop_queue(netdev);
658 if (netdev->flags & IFF_PROMISC) {
4d12997a 659 rx_creg |= 0x0001;
880c9c66 660 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name);
4cd24eaf 661 } else if (!netdev_mc_empty(netdev) ||
1da177e4 662 (netdev->flags & IFF_ALLMULTI)) {
4d12997a
PM		 663 rx_creg &= 0xfffe;
664 rx_creg |= 0x0002;
880c9c66 665 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name);
1da177e4
LT		 666 } else {
667 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
4d12997a 668 rx_creg &= 0x00fc;
1da177e4 669 }
4d12997a 670 async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg);
1da177e4
LT		 671 netif_wake_queue(netdev);
672}
673
25a79c41
SH		 674static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb,
675 struct net_device *netdev)
1da177e4
LT		 676{
677 rtl8150_t *dev = netdev_priv(netdev);
678 int count, res;
679
680 netif_stop_queue(netdev);
681 count = (skb->len < 60) ? 60 : skb->len;
682 count = (count & 0x3f) ? count : count + 1;
683 dev->tx_skb = skb;
684 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
685 skb->data, count, write_bulk_callback, dev);
686 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
23219c13
PC		 687 /* Can we get/handle EPIPE here? */
688 if (res == -ENODEV)
689 netif_device_detach(dev->netdev);
690 else {
4dc89948 691 dev_warn(&netdev->dev, "failed tx_urb %d\n", res);
b7e41e23 692 netdev->stats.tx_errors++;
23219c13
PC		 693 netif_start_queue(netdev);
694 }
1da177e4 695 } else {
b7e41e23
SH		 696 netdev->stats.tx_packets++;
697 netdev->stats.tx_bytes += skb->len;
1da177e4
LT		 698 netdev->trans_start = jiffies;
699 }
700
6ed10654 701 return NETDEV_TX_OK;
1da177e4
LT		 702}
703
704
705static void set_carrier(struct net_device *netdev)
706{
707 rtl8150_t *dev = netdev_priv(netdev);
708 short tmp;
709
710 get_registers(dev, CSCR, 2, &tmp);
711 if (tmp & CSCR_LINK_STATUS)
712 netif_carrier_on(netdev);
713 else
714 netif_carrier_off(netdev);
715}
716
717static int rtl8150_open(struct net_device *netdev)
718{
719 rtl8150_t *dev = netdev_priv(netdev);
720 int res;
721
722 if (dev->rx_skb == NULL)
723 dev->rx_skb = pull_skb(dev);
724 if (!dev->rx_skb)
725 return -ENOMEM;
726
727 set_registers(dev, IDR, 6, netdev->dev_addr);
141b9e66 728
1da177e4
LT		 729 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
730 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
23219c13
PC		 731 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) {
732 if (res == -ENODEV)
733 netif_device_detach(dev->netdev);
4dc89948 734 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res);
23219c13
PC		 735 return res;
736 }
1da177e4
LT		 737 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
738 dev->intr_buff, INTBUFSIZE, intr_callback,
739 dev, dev->intr_interval);
23219c13
PC		 740 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) {
741 if (res == -ENODEV)
742 netif_device_detach(dev->netdev);
4dc89948 743 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res);
23219c13
PC		 744 usb_kill_urb(dev->rx_urb);
745 return res;
746 }
1da177e4
LT		 747 enable_net_traffic(dev);
748 set_carrier(netdev);
23219c13 749 netif_start_queue(netdev);
1da177e4
LT		 750
751 return res;
752}
753
754static int rtl8150_close(struct net_device *netdev)
755{
756 rtl8150_t *dev = netdev_priv(netdev);
757 int res = 0;
758
759 netif_stop_queue(netdev);
760 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
761 disable_net_traffic(dev);
762 unlink_all_urbs(dev);
763
764 return res;
765}
766
767static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
768{
769 rtl8150_t *dev = netdev_priv(netdev);
770
7826d43f
JP		 771 strlcpy(info->driver, driver_name, sizeof(info->driver));
772 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
773 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
1da177e4
LT		 774}
775
776static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
777{
778 rtl8150_t *dev = netdev_priv(netdev);
779 short lpa, bmcr;
780
781 ecmd->supported = (SUPPORTED_10baseT_Half |
782 SUPPORTED_10baseT_Full |
783 SUPPORTED_100baseT_Half |
784 SUPPORTED_100baseT_Full |
785 SUPPORTED_Autoneg |
786 SUPPORTED_TP | SUPPORTED_MII);
787 ecmd->port = PORT_TP;
788 ecmd->transceiver = XCVR_INTERNAL;
789 ecmd->phy_address = dev->phy;
790 get_registers(dev, BMCR, 2, &bmcr);
791 get_registers(dev, ANLP, 2, &lpa);
792 if (bmcr & BMCR_ANENABLE) {
70739497
DD		 793 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ?
794 SPEED_100 : SPEED_10);
795 ethtool_cmd_speed_set(ecmd, speed);
1da177e4 796 ecmd->autoneg = AUTONEG_ENABLE;
70739497 797 if (speed == SPEED_100)
1da177e4
LT		 798 ecmd->duplex = (lpa & LPA_100FULL) ?
799 DUPLEX_FULL : DUPLEX_HALF;
800 else
801 ecmd->duplex = (lpa & LPA_10FULL) ?
802 DUPLEX_FULL : DUPLEX_HALF;
803 } else {
804 ecmd->autoneg = AUTONEG_DISABLE;
70739497
DD		 805 ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ?
806 SPEED_100 : SPEED_10));
1da177e4
LT		 807 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
808 DUPLEX_FULL : DUPLEX_HALF;
809 }
810 return 0;
811}
812
0fc0b732 813static const struct ethtool_ops ops = {
1da177e4
LT		 814 .get_drvinfo = rtl8150_get_drvinfo,
815 .get_settings = rtl8150_get_settings,
816 .get_link = ethtool_op_get_link
817};
818
819static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
820{
821 rtl8150_t *dev = netdev_priv(netdev);
822 u16 *data = (u16 *) & rq->ifr_ifru;
823 int res = 0;
824
825 switch (cmd) {
826 case SIOCDEVPRIVATE:
827 data[0] = dev->phy;
828 case SIOCDEVPRIVATE + 1:
829 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
830 break;
831 case SIOCDEVPRIVATE + 2:
832 if (!capable(CAP_NET_ADMIN))
833 return -EPERM;
834 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
835 break;
836 default:
837 res = -EOPNOTSUPP;
838 }
839
840 return res;
841}
842
d79f7ef4
SH		 843static const struct net_device_ops rtl8150_netdev_ops = {
844 .ndo_open = rtl8150_open,
845 .ndo_stop = rtl8150_close,
846 .ndo_do_ioctl = rtl8150_ioctl,
847 .ndo_start_xmit = rtl8150_start_xmit,
141b9e66 848 .ndo_tx_timeout = rtl8150_tx_timeout,
afc4b13d 849 .ndo_set_rx_mode = rtl8150_set_multicast,
d79f7ef4
SH		 850 .ndo_set_mac_address = rtl8150_set_mac_address,
851
852 .ndo_change_mtu = eth_change_mtu,
853 .ndo_validate_addr = eth_validate_addr,
854};
855
1da177e4
LT		 856static int rtl8150_probe(struct usb_interface *intf,
857 const struct usb_device_id *id)
858{
859 struct usb_device *udev = interface_to_usbdev(intf);
860 rtl8150_t *dev;
861 struct net_device *netdev;
862
863 netdev = alloc_etherdev(sizeof(rtl8150_t));
41de8d4c 864 if (!netdev)
1da177e4 865 return -ENOMEM;
1da177e4
LT		 866
867 dev = netdev_priv(netdev);
1da177e4
LT		 868
869 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
870 if (!dev->intr_buff) {
871 free_netdev(netdev);
872 return -ENOMEM;
873 }
874
875 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
876 spin_lock_init(&dev->rx_pool_lock);
141b9e66 877
1da177e4
LT		 878 dev->udev = udev;
879 dev->netdev = netdev;
d79f7ef4 880 netdev->netdev_ops = &rtl8150_netdev_ops;
1da177e4 881 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
1da177e4
LT		 882 SET_ETHTOOL_OPS(netdev, &ops);
883 dev->intr_interval = 100; /* 100ms */
884
885 if (!alloc_all_urbs(dev)) {
21f52432 886 dev_err(&intf->dev, "out of memory\n");
1da177e4
LT		 887 goto out;
888 }
889 if (!rtl8150_reset(dev)) {
21f52432 890 dev_err(&intf->dev, "couldn't reset the device\n");
1da177e4
LT		 891 goto out1;
892 }
893 fill_skb_pool(dev);
894 set_ethernet_addr(dev);
141b9e66 895
1da177e4
LT		 896 usb_set_intfdata(intf, dev);
897 SET_NETDEV_DEV(netdev, &intf->dev);
898 if (register_netdev(netdev) != 0) {
21f52432 899 dev_err(&intf->dev, "couldn't register the device\n");
1da177e4
LT		 900 goto out2;
901 }
09abfa80 902
880c9c66 903 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name);
09abfa80 904
1da177e4
LT		 905 return 0;
906
907out2:
908 usb_set_intfdata(intf, NULL);
909 free_skb_pool(dev);
910out1:
911 free_all_urbs(dev);
912out:
913 kfree(dev->intr_buff);
914 free_netdev(netdev);
915 return -EIO;
916}
917
918static void rtl8150_disconnect(struct usb_interface *intf)
919{
920 rtl8150_t *dev = usb_get_intfdata(intf);
921
922 usb_set_intfdata(intf, NULL);
923 if (dev) {
924 set_bit(RTL8150_UNPLUG, &dev->flags);
eff674a5 925 tasklet_kill(&dev->tl);
1da177e4
LT		 926 unregister_netdev(dev->netdev);
927 unlink_all_urbs(dev);
928 free_all_urbs(dev);
929 free_skb_pool(dev);
930 if (dev->rx_skb)
931 dev_kfree_skb(dev->rx_skb);
932 kfree(dev->intr_buff);
933 free_netdev(dev->netdev);
934 }
935}
936
141b9e66 937static struct usb_driver rtl8150_driver = {
938 .name = driver_name,
939 .probe = rtl8150_probe,
940 .disconnect = rtl8150_disconnect,
941 .id_table = rtl8150_table,
942 .suspend = rtl8150_suspend,
e1f12eb6
SS		 943 .resume = rtl8150_resume,
944 .disable_hub_initiated_lpm = 1,
141b9e66 945};
946
d632eb1b 947module_usb_driver(rtl8150_driver);
1da177e4
LT		 948
949MODULE_AUTHOR(DRIVER_AUTHOR);
950MODULE_DESCRIPTION(DRIVER_DESC);
951MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)